That boy is good maths. He often helps us our maths. ( )A.with; toB.at; withC.for; with

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【题目】That boy is good _____ maths. He often helps us _____ our maths. ( )

A.with; toB.at; withC.for; with

【答案】B

【解析】

句意：那个男孩数学很好。他经常在数学方面帮助我们。be good at sth.擅长某事，help sb. with sth.在某方面帮助某人，固定结构。故选B。